Infinity M300/M300+ Features For Vg2.4; Qrs Threshold - Dräger Infinity M300 series Supplemental Manual

Infinity M300/M300+ Features for VG2.4

Infinity M300/M300+ Features for VG2.4
This section contains the Infinity M300/M300+ features for the VG2.4 release. For specific information
about the new M300+, refer to "Infinity M300+" on page 18.

QRS Threshold

Depending on the software versions running on the ICS and the M300/M300+ devices, the procedure you
follow to set the QRS threshold on the M300/M300+ will differ:
 If ICS is VG2.1.1 or later, and the M300/M300+ is VG 2.4 or later, you set the QRS threshold by a menu
selection, either Normal or Low
 If ICS is VG2.1 or earlier, or the M300 is VG2.3 or earlier, the QRS threshold is linked to the ECG gain
and the QRS threshold buttons are greyed out. The following relationships apply:
– Setting the gain to 1, 2, 4, or 8 mV/cm, automatically sets to the QRS threshold to Normal.
– Setting the gain to 0.5 or 0.25 mV/cm, automatically sets the QRS threshold to Low.
NOTE
Patient admitted on M300/M300+ VG2.4:
Changes to QRS/ARR processing leads and gain settings do not change QRS threshold settings.
Patient admitted on M300 VG2.3 and earlier:
– Changes to QRS/ARR processing leads and gain settings will alter the QRS threshold settings be-
tween Normal and Low.
– When selecting one or two QRS/ARR processing leads, a gain setting of < 1mv on either lead, sets
the ICS QRS threshold to Low.
– When selecting one or two QRS/ARR processing leads, a gain setting of > 1mv on all leads, sets the
ICS QRS threshold to Normal.
To set the QRS Threshold using ICS VG2.1.1 and M300/M300+ VG2.4
From the Main ICS screen:
1 Click System setup on the ICS.
2 Click Layouts.
3 Click one of the following:
– Normal to detect QRS complexes of normal amplitude.
– Low to detect QRS complexes of low amplitude.
10 Supplement – Infinity M300 and M300+ Series – VG2.4